Nitrous oxide emissions are no laughing matter

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First consumption of abundant life form, Archaea, discovered

Posted: 12 Mar 2012 11:03 AM PDT

Scientists have documented for the first time that animals can and do consume Archaea – a type of single-celled microorganism thought to be among the most abundant life forms on Earth. Archaea that consume the greenhouse gas methane were in turn eaten by worms living at deep-sea cold seeps off Costa Rica and the West Coast of the United States.

Nitrous oxide emissions are no laughing matter

Posted: 12 Mar 2012 07:19 AM PDT

While many are acquainted with the problems caused by CO­­2 emissions, the harmful effects of the release of nitrous oxide into the atmosphere have been far less well known. Only in recent years has the international scientific community begun to understand the scope of the threat posed by N­­2O emissions.  

California’s snow not disappearing despite drought

Posted: 12 Mar 2012 07:14 AM PDT

During some winters a significant amount of snow falls on parts of California. During other winters — like this one (so far) — there is much less snow. But more than 130 years of snow data show that over time snowfall in California is neither increasing nor decreasing.

Sea ice drives arctic air pollutants, NASA finds

Posted: 01 Mar 2012 08:11 AM PST

Drastic reductions in Arctic sea ice in the last decade may be intensifying the chemical release of bromine into the atmosphere, resulting in ground-level ozone depletion and the deposit of toxic mercury in the Arctic, according to a new NASA-led study.
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